Battery problem
Our battery in the RV went down this weekend and wouldn't stay up while running down the road. I checked it once back home, and with the switch in "Store", the battery puts out about 8.5 volts whet...
Forum Discussion
Coach-man wrote:You are correct in 99% of your response. If the engine is running, the alternator would show a higher voltage at the house battery. However, after a short time of the engine no longer running, the voltage will drop to the steady state. According to this
You say "engine started right up"? The house battery has nothing to do with starting, and neither does your disconect switch. The disconnect switch is wired to your house battery, but leaves thins like your steps, LP detector, and sometimes the radio, stereo, which draw power and in some cases run down the battery.
To the OP your measure of 12.45 volts on the battery is almost dead. The engine alternator should have been charging as you drove. You either have a big drain on the battery or the battery is bad!
Battery voltage (Temperature compensated) the battery would be 75% if the temperature is 80 degrees.
